Finding the Fourth Proportional to 1,127.46, 1,688.56 and 1,088.52

Step by Step Solution

1. Step 1: Write the proportion equation
   1,127.46 : 1,688.56 = 1,088.52 : x
2. Step 2: Convert to fraction form
   1,127.46/1,688.56 = 1,088.52/x
3. Step 3: Cross multiply
   1,127.46x = 1,688.56 × 1,088.52
4. Step 4: Simplify right side
   1,127.46x = 1,838,031.33
5. Step 5: Solve for x
   x = 1,838,031.33/1,127.46
6. Step 6: Final answer
   x = 1,630.24